Hey guys!

I think this will be very useful information for everyone, so I did a experiment with some friends by gathering info about 11000 cave keys used and took all the EXP that they received in cave runes for each initiative/critical/injury/combo/control and calculated the average EXP per 1 key used for all 5 in all 11x 1k key examples.

(So you can say this research was based on 55 examples of cave runes received from using 1k keys)

Result:

This result was actually quite impressive, cheaper than I originally thought

The range was from 1,35 to 1,5 EXP per 1 cave key used for each stats.

Overall average was 1,43814 exp per key (we will be using this number as this is the real result)

Here is just 1 small example from 1k keys used and initiative gained.

AVERAGE EXP/KEYS based on entire slot of runes

note: 1x full set = (1 rune of all 5 initiative/critical/injury/combo/control)

note2: the ,1 ,2 ,8 ,9 numbers are round up

1>2 = 5 exp required (average 3,5 keys for 1x full set)

2>3 = 10 exp required (average 7 keys for 1x full set)

3>4 = 20 exp required (average 14 keys for 1x full set)

4>5 = 40 exp required (average 28 keys for 1x full set)

5>6 = 80 exp required (average 55,6 keys for 1x full set)

6>7 = 160 exp required (average 111 keys for 1x full set)

7>8 = 320 exp required (average 222,5 keys for 1x full set)

8>9 = 640 exp required (average 445 keys for 1x full set)

9>10 = 1280 exp required (average 890 keys for 1x full set)

10>11 = 1920 exp required (average 1335 keys for 1x full set)

11>12 = 3360 exp required (average 2336 keys for 1x full set)

TOTAL: 7835 exp required (average 5448 keys for 1x full set)

Fun fact info: (of course this will never be correct because of all the free draws and random runes from events etc.)

5448 * 5 = 27240 keys for all 5 rune stones level 1>12 on a single ninja.

27240 * 4 = 108960 keys for all 5 rune stones level 1>12 on all 4 ninjas.

Fun fact info 2: (The true value of lvl 5 rune stone from cave key pack)

CAVE KEY PACK 900cpn = 88 cave keys + lvl 5 rune stone

80/5 = 16

16/1,43814 = average 11 cave keys !

(80 is the exp that level 5 rune stone provides, since it's only for 1 rune we divide by 5 to get the overall exp from it

then dividing it by the average exp/key which is 1,43814 = 11 cave keys)

Conclusion:

CAVE KEY PACK 900cpn = 99 cave keys worth